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Zhu H.,Tianjin Agriculturial College | Shi J.,Tianjin Agriculturial College | Wei Z.,Tianjin Agriculturial College | Dai R.,Tianjin Agriculturial College | Zhang X.,Tianjin Normal University
Acta Crystallographica Section E: Structure Reports Online | Year: 2010

The mol-ecule of the title compound, C 22H 23N 3O 3, exists in the enamine-keto form. A strong intra-molecular N - H⋯O hydrogen bond occurs, generating an S(6) ring. The dihedral angle between the heterocycle and the adjacent phenyl ring is 3.75 (15)°. Source


Zhu H.,Tianjin Agriculturial College | Wang Z.,Tianjin Agriculturial College | Wei Z.,Tianjin Agriculturial College | Bai Y.,Tianjin Agriculturial College | Xv X.,Tianjin Agriculturial College
Acta Crystallographica Section E: Structure Reports Online | Year: 2011

In the title complex, [Cu(C 12H 12N 3O) 2], the Cu II ion is tetracoordinated by two N atoms and two O atoms from two bischelating 4-(1-iminoethyl)-3-methyl-1-phenyl-1H-pyrazol- 5-olate ligands in a squareplanar geometry. The two N atoms and two O atoms around the Cu II atom are trans to each other, as the Cu II atom lies on an inversion centre. The sixmembered ring composed of the Cu, an O, an N and three C atoms of the ligand and the pyrazole ring is nearly planar, the largest deviation being 0.037 (4) Å for an N atom. In the crystal, weak intermolecular C - H⋯N hydrogenbonding interactions link the molecules into chains along the c axis. Source


Zhu H.,Tianjin Agriculturial College | Wang Z.,Tianjin Agriculturial College | Ren J.,Tianjin Agriculturial College | Zhang M.,Tianjin Agriculturial College | Xu W.,Tianjin Agriculturial College
Acta Crystallographica Section E: Structure Reports Online | Year: 2011

In the title compound, C 21H 21N 3O 2, an intra-molecular N - H⋯O inter-action generates an S(6) ring, which stablizes the enamine-keto tautomer. The S(6) ring makes dihedral angles of 33.07 (7), 56.50 (8) and 38.59 (8)°, respectively, with the benzoyl-acetone benzene ring and the anti-pyrine pyrazole and benzene rings. © Zhu et al. 2011. Source


Wei Z.,Tianjin Agriculturial College | Zheng X.,Tianjin Agriculturial College | Bai J.,Tianjin Agriculturial College | Zhai X.,Tianjin Agriculturial College | Song L.,Tianjin Agriculturial College
Acta Crystallographica Section E: Structure Reports Online | Year: 2011

In the title compound, C 37H 40N 4O 2, the xanthene and spiro-lactam rings are almost planar, with r.m.s. deviations from the mean planes of 0.223 (2) and 0.057 (2) Å, respectively, and form a dihedral angle of 85.76 (3)°. The dihedral angle between the xanthene mean plane and the benzene ring is 87.16 (5)°. One of the two ethyl groups of one of the diethyl-amino groups is disordered over two sets of sites [0.76 (1):0.24 (1)]. © Wei et al. 2011. Source


Zhu H.,Tianjin Agriculturial College | Wei Z.,Tianjin Agriculturial College | Bu L.,Tianjin Agriculturial College | Xu X.,Tianjin Agriculturial College | Shi J.,Tianjin Agriculturial College
Acta Crystallographica Section E: Structure Reports Online | Year: 2010

The title complex, [Ni(C12H11N2O 2)2(C3H7NO)2], lies on on an inversion center. The NiII ion is coordinated in a slightly distorted octahedral coordination enviroment by four O atoms from two bis-chelating 4-acety-3-methyl-1-phenyl-1H-pyrazol-5-olate ligands in the equatorial plane and two O atoms from two N,N-dimethyl-formamide ligands in the axial sites. In the crystal structure, weak intermolecular π-π stacking interactions with centroid-centroid distances of 3.7467 (13) Å link molecules into chains extending alongthe b axis. Source

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